Pipe-wrench



(N9 Model.)

P. H. QUINLAN. PIPE WRENCH.

No. 432,079. Patented July 15, 1-890.

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PATRICK HENRY QUINLAN, OF NEXV ORLEANS, LOUISIANA.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 432,079, dated July 151890. Application filed September 26, 1889. Serial No. 325,124, (Nomodel.)

To all whom it may concern:

Be it known that I, PATRICK HENRY QUIN- LAN, a citizen of the UnitedStates, residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented certain new and useful Improvements inPiperenches; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention has relation to an improve ment in pipeand nut wrenches,and the novelty will be fully understood from the following descriptionand claims,when taken in connection with the annexed drawings,in whichFigure 1 is a side elevation of myimproved wrench, showing the parts ina position ready for use. Fig. 2 is a cross-sectional View taken on theline 00 4120f Fig. 1. Fig. 3 is aface view of the serrated jaw. Fig. 4is a cross-sectional view through the eccentric of one of the levers.Fig. 5 is a side view of the outer jaw. Fig. 6 is a side view of theeccentric lever, and Fig.7 is a side view of the threaded rod or levercarrying the inner jaw with the operating-nut thereon. Fig. 8 is a sideview of a modification, showing the handle portion of the levers brokenaway.

Referring by letter to the said drawings, A indicates the frame forsustaining and connecting the various parts of my improved wrench. Thisframe A is provided with a bore 6, which extends longitudinallythroughit for the purpose of receiving the threaded rod or lever carrying theinner jaw. This frame is furthermore provided at a point intersectingthe bore c with a slot f, which is designed to receive the operating-nutg. This nut g, which is preferably provided with a milled surface andfits snugly in the slot f, has an internally-threaded aperture designedto engage the external threads at of the rod or lever F. It will thus beseen that by turning the nut in one direction the rodor lever, andconsequently the jaw carried thereby,will be advanced, when by turningthe said nut in the opposite direction the lever and jaw will beretracted. The lower jaw or inner jaw, which carries at its forward endthe biting portion, is preferably formed with a seat h to receive aserrated block II. This jaw is also provided with two arms I, adapted tostraddle the straight or longitudinal portion of the opposite jaw fromwithin outwardly, and their outer ends are connected bymeans of a rod orbolt 70, which is preferably a roller, so as to allow a free and easymovement of the inner jaw upon the outer side of the opposite jaw. Theframe A is also provided with a longitudinal slot or aperture, as bettershown in Fig. 2 of the drawings, and is designed to receive and form abearing for the pivotal parts of the outer jaw and its operatin g-lever.

D indicates the outer jaw, which has its forwaid end terminating in anan gular-faced hook b. This jaw is provided at its opposite or inner endwith an eye K, which is designed to be secured by means, which will bepresently explained, within the slotted portion of the frame A.

13 indicates one of the levers. This lever, which forms one of thehandles ofthe wrench, is provided at its forward end with a head O, andon one side of this head is formed an cecentric E, through which, and atan eccentric point, is a journal-aperture Z, a bolt a being employed topivotally secure the hook-j aw and eccentric lever in the slotted wallsof the case or frame A.

While I have shown and described the hooked jaw as having an eye andconnected by an eccentric joint with one of the handles, yet it isobvious that the hook-jaw may have its inner end terminating in anexternallythreaded portion and the internally-threaded nut employed tomove it, while the opposite jaw may have its inner end terminating inthe eye or recess and connected with the operating lever by an eccentricjoint. The operation in either case will be the same, as it is my objectto have one of the jaws given a positive and ready backward and forwardmovement by means of an eccentrically-j ointed lever, while the otherwill be given a steady and uniform movement by the manipulation of a nutco-operating with a threaded rod or bar.

The frame or casing is here shown as being made entire and provided witha slot to receive the eccentrically-jointed levers and a bore to receivethe threaded rod or bar, yetin some cases it may be desirable to formthis frame or casing in several parts, and I have found that it isconvenient in some instances to form such frame from two similar platesand unite them by bolts, rivets, or other suitable fastening devices.

It will be observed that when the operatinglever B has been brought tothe position shown. in Fig. 1 of the drawings, so that both levers willafford a convenient grasp of the operator, the outer or hook jaw will bedrawn inwardly, or in the direction of the inner jaw.

Having described my invention, what I claim is 1. A wrench comprising aconnecting plate or frame having an internal bore or bearing and also atransverse slot across said bore, a threaded nut therein, a rod havingexternal threads and bearing in said bore and nut and carrying at itsforward end a jaw, a jaw bearing in the plate, and a hand-levereccentrically connected with the latter jaw and also journaled in theplate, substantially as specified.

2. The combination, with a connecting and sustaining plate or frame, ofalever bearing in said plate, a jaw connected to the said lever by aneccentric joint, a threaded rod bearing in said plate and carrying a jawat its forward end, an internally-threaded nut arranged in a slot in theplate for moving the rod, and arms also at the forward end of the rodstraddling the opposite jaw, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

PATRICK HENRY QUIN LAN.

Witnesses:

F. L. RICHARDSON, W. lVIORGAN GURLEY.

